Display the values in textbox from gridview

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Javascript

<asp:Content ID="Content1" ContentPlaceHolderID="ABCD" runat="Server">

<asp:GridView ID="grd_subparts" runat="server" AutoGenerateColumns="False" CellPadding="4" ForeColor="#333333" GridLines="None">
<Columns>

<asp:TemplateField HeaderText="Sub Part Name" SortExpression="CRM_SUB_PART_NAME">
<ItemTemplate>
<asp:TextBox ID="txtsubpartname" runat="server" BorderWidth="1px" Text='<%#Bind("CRM_SUB_PART_NAME") %>'> 
</asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>

<asp:Button ID="btn_save" runat="server" Text="Save" />

this is my page attached with masterpage.....
i need to display the values of textbox that found in the gridview...using javascript...pls help me in this


[edit]Subject only: Try to describe your problem in a simple overview, so we can tell at a glance if we can help. "help me in javascripts" is not helpful - OriginalGriff[/edit]